This is xnu-11215.1.10. See this file in:
Directory listing for xnu-11215.1.10//tools
Makefile
cocci/
cred_dump_backtraces.c
cred_dump_creds.c
entropy_health_test_bounds.py
format_vm_parameter_validation.py
kt-dump/
lldbmacros/
lockstat/
pre-commit.sh
remote_build.sh
symbolify.py
syscall_map.lua
tests/
trace/
xcrun_cache.sh